Alergy

Its been 5 months while itching between my legs fingers and elbows, when body itches , ithces areas gets red circles and these circles are expanding, my wife and 5 month old baby girl also got this problem. I have used emoxil 500mg, and some of alergy tablets and used hidrozol cream but those red cirlcels are treated for some days but again it refereshes after some days. Kindly suggest me what to do. Some told me that it is some kind of eczma. and it will expand more. Kindly suggest. and kidnly suggest any medicine/treatement for my wife and baby girls 5months old.